def main():
clock = pygame.time.Clock()
game_instance = Game((screen_width, screen_height))
game_instance.start()
all_sprites = pygame.sprite.Group()
while game_instance.is_running:
# Process game events
game_instance.handle_input()
# Render the game
game_instance.update()
game_instance.render(all_sprites)
game_instance.clean()
# Update display
pygame.display.update()
# Make sure we keep a consistent framerate
clock.tick(frame_rate)
pygame.quit()
sys.exit()
